Finding the Fourth Proportional to 256,933.86, 385,304.94 and 88,406.52

Step by Step Solution

1. Step 1: Write the proportion equation
   256,933.86 : 385,304.94 = 88,406.52 : x
2. Step 2: Convert to fraction form
   256,933.86/385,304.94 = 88,406.52/x
3. Step 3: Cross multiply
   256,933.86x = 385,304.94 × 88,406.52
4. Step 4: Simplify right side
   256,933.86x = 34,063,468,884.21
5. Step 5: Solve for x
   x = 34,063,468,884.21/256,933.86
6. Step 6: Final answer
   x = 132,576.80